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<FONT color="green">001</FONT>    package org.hackystat.telemetry.service.prefetch;<a name="line.1"></a>
<FONT color="green">002</FONT>    <a name="line.2"></a>
<FONT color="green">003</FONT>    import java.io.File;<a name="line.3"></a>
<FONT color="green">004</FONT>    import java.io.FileInputStream;<a name="line.4"></a>
<FONT color="green">005</FONT>    import java.io.InputStream;<a name="line.5"></a>
<FONT color="green">006</FONT>    import java.util.ArrayList;<a name="line.6"></a>
<FONT color="green">007</FONT>    import java.util.List;<a name="line.7"></a>
<FONT color="green">008</FONT>    import java.util.logging.Logger;<a name="line.8"></a>
<FONT color="green">009</FONT>    <a name="line.9"></a>
<FONT color="green">010</FONT>    import javax.xml.bind.JAXBContext;<a name="line.10"></a>
<FONT color="green">011</FONT>    import javax.xml.bind.Unmarshaller;<a name="line.11"></a>
<FONT color="green">012</FONT>    <a name="line.12"></a>
<FONT color="green">013</FONT>    import org.hackystat.telemetry.analyzer.configuration.ExtensionFileFilter;<a name="line.13"></a>
<FONT color="green">014</FONT>    import org.hackystat.telemetry.service.prefetch.jaxb.TelemetryPrefetch;<a name="line.14"></a>
<FONT color="green">015</FONT>    import org.hackystat.telemetry.service.server.Server;<a name="line.15"></a>
<FONT color="green">016</FONT>    import org.hackystat.telemetry.service.server.ServerProperties;<a name="line.16"></a>
<FONT color="green">017</FONT>    import org.hackystat.utilities.stacktrace.StackTrace;<a name="line.17"></a>
<FONT color="green">018</FONT>    <a name="line.18"></a>
<FONT color="green">019</FONT>    /**<a name="line.19"></a>
<FONT color="green">020</FONT>     * Reads in the XML files (if any) containing prefetch information, and sets up a timer task to <a name="line.20"></a>
<FONT color="green">021</FONT>     * prefetch (i.e. run) these chart analyses once a day.  If RunOnStartup is true, then the prefetch<a name="line.21"></a>
<FONT color="green">022</FONT>     * tasks are run immediately.  <a name="line.22"></a>
<FONT color="green">023</FONT>     * @author Philip Johnson <a name="line.23"></a>
<FONT color="green">024</FONT>     */<a name="line.24"></a>
<FONT color="green">025</FONT>    public class PrefetchManager {<a name="line.25"></a>
<FONT color="green">026</FONT>      /** This telemetry server. */<a name="line.26"></a>
<FONT color="green">027</FONT>      Server server;<a name="line.27"></a>
<FONT color="green">028</FONT>      /** The logger for this telemetry server. */<a name="line.28"></a>
<FONT color="green">029</FONT>      Logger logger;<a name="line.29"></a>
<FONT color="green">030</FONT>      /** The list of TelemetryPrefetch JAXB instances. */<a name="line.30"></a>
<FONT color="green">031</FONT>      List&lt;TelemetryPrefetch&gt; telemetryPrefetchList = new ArrayList&lt;TelemetryPrefetch&gt;();<a name="line.31"></a>
<FONT color="green">032</FONT>      /** The list of DailyTimer instances, one per TelemetryPrefetch file. */<a name="line.32"></a>
<FONT color="green">033</FONT>      List&lt;DailyTimer&gt; timers = new ArrayList&lt;DailyTimer&gt;();<a name="line.33"></a>
<FONT color="green">034</FONT>      <a name="line.34"></a>
<FONT color="green">035</FONT>      /**<a name="line.35"></a>
<FONT color="green">036</FONT>       * Constructs a PrefetchManager, which reads in the Telemetry prefetch XML files and sets up <a name="line.36"></a>
<FONT color="green">037</FONT>       * a DailyTimer task for each XML file found.<a name="line.37"></a>
<FONT color="green">038</FONT>       * @param server This Telemetry analysis server.<a name="line.38"></a>
<FONT color="green">039</FONT>       */<a name="line.39"></a>
<FONT color="green">040</FONT>      public PrefetchManager(Server server) {<a name="line.40"></a>
<FONT color="green">041</FONT>        this.server = server;<a name="line.41"></a>
<FONT color="green">042</FONT>        this.logger = server.getLogger();<a name="line.42"></a>
<FONT color="green">043</FONT>        this.telemetryPrefetchList = getTelemetryPrefetchList();<a name="line.43"></a>
<FONT color="green">044</FONT>        setupTimers();<a name="line.44"></a>
<FONT color="green">045</FONT>      }<a name="line.45"></a>
<FONT color="green">046</FONT>      <a name="line.46"></a>
<FONT color="green">047</FONT>      /**<a name="line.47"></a>
<FONT color="green">048</FONT>       * Find any Prefetch XML files and constructs the Java instances for them, returning them<a name="line.48"></a>
<FONT color="green">049</FONT>       * as a List of TelemetryPrefetch instances. <a name="line.49"></a>
<FONT color="green">050</FONT>       * @return The list of TelemetryPrefetch instances, or an empty list if none found.<a name="line.50"></a>
<FONT color="green">051</FONT>       */<a name="line.51"></a>
<FONT color="green">052</FONT>      private List&lt;TelemetryPrefetch&gt; getTelemetryPrefetchList() {<a name="line.52"></a>
<FONT color="green">053</FONT>        List&lt;TelemetryPrefetch&gt; telemetryPrefetchList = new ArrayList&lt;TelemetryPrefetch&gt;();<a name="line.53"></a>
<FONT color="green">054</FONT>        String defDirString = server.getServerProperties().get(ServerProperties.PREFETCH_DIR_KEY);<a name="line.54"></a>
<FONT color="green">055</FONT>        if (defDirString == null || !((new File(defDirString)).exists())) {<a name="line.55"></a>
<FONT color="green">056</FONT>          server.getLogger().info("Telemetry prefetch directory not available: " + defDirString);<a name="line.56"></a>
<FONT color="green">057</FONT>        }<a name="line.57"></a>
<FONT color="green">058</FONT>        else {<a name="line.58"></a>
<FONT color="green">059</FONT>          // Read in the any prefetch definitions from the prefetch directory.<a name="line.59"></a>
<FONT color="green">060</FONT>          File defDir = new File(defDirString);<a name="line.60"></a>
<FONT color="green">061</FONT>          File[] xmlFiles = defDir.listFiles(new ExtensionFileFilter(".xml"));<a name="line.61"></a>
<FONT color="green">062</FONT>          FileInputStream fileStream = null;<a name="line.62"></a>
<FONT color="green">063</FONT>          for (int i = 0; i &lt; xmlFiles.length; i++) {<a name="line.63"></a>
<FONT color="green">064</FONT>            try {<a name="line.64"></a>
<FONT color="green">065</FONT>              // Get the TelemetryPrefetch instance from the file.<a name="line.65"></a>
<FONT color="green">066</FONT>              this.logger.info("Reading telemetry prefetch data from: " + xmlFiles[i].getName());<a name="line.66"></a>
<FONT color="green">067</FONT>              fileStream = new FileInputStream(xmlFiles[i]);<a name="line.67"></a>
<FONT color="green">068</FONT>              telemetryPrefetchList.add(getDefinitions(fileStream));<a name="line.68"></a>
<FONT color="green">069</FONT>              fileStream.close();<a name="line.69"></a>
<FONT color="green">070</FONT>            }<a name="line.70"></a>
<FONT color="green">071</FONT>            catch (Exception e) {<a name="line.71"></a>
<FONT color="green">072</FONT>              this.logger.info("Error reading definitions from: " + xmlFiles[i] + " " + e);<a name="line.72"></a>
<FONT color="green">073</FONT>              try {<a name="line.73"></a>
<FONT color="green">074</FONT>                fileStream.close();<a name="line.74"></a>
<FONT color="green">075</FONT>              }<a name="line.75"></a>
<FONT color="green">076</FONT>              catch (Exception f) { <a name="line.76"></a>
<FONT color="green">077</FONT>                this.logger.info("Failed to close: " + fileStream.toString() + " " + e);<a name="line.77"></a>
<FONT color="green">078</FONT>              }<a name="line.78"></a>
<FONT color="green">079</FONT>            }<a name="line.79"></a>
<FONT color="green">080</FONT>          }<a name="line.80"></a>
<FONT color="green">081</FONT>        }<a name="line.81"></a>
<FONT color="green">082</FONT>        return telemetryPrefetchList;<a name="line.82"></a>
<FONT color="green">083</FONT>      }<a name="line.83"></a>
<FONT color="green">084</FONT>    <a name="line.84"></a>
<FONT color="green">085</FONT>      /**<a name="line.85"></a>
<FONT color="green">086</FONT>       * Initializes the list of DailyTimer instances. <a name="line.86"></a>
<FONT color="green">087</FONT>       */<a name="line.87"></a>
<FONT color="green">088</FONT>      private void setupTimers() {<a name="line.88"></a>
<FONT color="green">089</FONT>        for (TelemetryPrefetch prefetch : telemetryPrefetchList) {<a name="line.89"></a>
<FONT color="green">090</FONT>          PrefetchTask task = new PrefetchTask(prefetch, this.logger, this.server.getHostName());<a name="line.90"></a>
<FONT color="green">091</FONT>          DailyTimer timer = new DailyTimer(prefetch.getMinutesAfterMidnight(), task); <a name="line.91"></a>
<FONT color="green">092</FONT>          this.logger.info("Prefetch '" + prefetch.getName() + "' scheduled for: " + <a name="line.92"></a>
<FONT color="green">093</FONT>              timer.getTriggerTime());<a name="line.93"></a>
<FONT color="green">094</FONT>          this.timers.add(timer);<a name="line.94"></a>
<FONT color="green">095</FONT>          if ("True".equalsIgnoreCase(prefetch.getRunOnStartup())) {<a name="line.95"></a>
<FONT color="green">096</FONT>            this.logger.info("Run on startup is true, so invoking: " + prefetch.getName());<a name="line.96"></a>
<FONT color="green">097</FONT>            task.run();<a name="line.97"></a>
<FONT color="green">098</FONT>          }<a name="line.98"></a>
<FONT color="green">099</FONT>        }<a name="line.99"></a>
<FONT color="green">100</FONT>      }<a name="line.100"></a>
<FONT color="green">101</FONT>      <a name="line.101"></a>
<FONT color="green">102</FONT>      /**<a name="line.102"></a>
<FONT color="green">103</FONT>       * Returns a TelemetryPrefetch object constructed from defStream, or null if unsuccessful.<a name="line.103"></a>
<FONT color="green">104</FONT>       * @param defStream The input stream containing a TelemetryPrefetch object in XML format.<a name="line.104"></a>
<FONT color="green">105</FONT>       * @return The TelemetryPrefetch object.<a name="line.105"></a>
<FONT color="green">106</FONT>       */<a name="line.106"></a>
<FONT color="green">107</FONT>      private TelemetryPrefetch getDefinitions (InputStream defStream) {<a name="line.107"></a>
<FONT color="green">108</FONT>        // Read in the definitions file.<a name="line.108"></a>
<FONT color="green">109</FONT>        try {<a name="line.109"></a>
<FONT color="green">110</FONT>          JAXBContext jaxbContext = JAXBContext<a name="line.110"></a>
<FONT color="green">111</FONT>          .newInstance(org.hackystat.telemetry.service.prefetch.jaxb.ObjectFactory.class);<a name="line.111"></a>
<FONT color="green">112</FONT>          Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();<a name="line.112"></a>
<FONT color="green">113</FONT>          return (TelemetryPrefetch) unmarshaller.unmarshal(defStream);<a name="line.113"></a>
<FONT color="green">114</FONT>        } <a name="line.114"></a>
<FONT color="green">115</FONT>        catch (Exception e) {<a name="line.115"></a>
<FONT color="green">116</FONT>          this.logger.severe("Failed to get TelemetryPrefetch from stream" + StackTrace.toString(e));<a name="line.116"></a>
<FONT color="green">117</FONT>        }<a name="line.117"></a>
<FONT color="green">118</FONT>        return null;<a name="line.118"></a>
<FONT color="green">119</FONT>      }<a name="line.119"></a>
<FONT color="green">120</FONT>    <a name="line.120"></a>
<FONT color="green">121</FONT>    }<a name="line.121"></a>




























































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